<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        function clone(target) {
            if (typeof target === 'object') {
                let cloneTarget = {};
                for (const key in target) {
                    cloneTarget[key] = clone(target[key]);
                }
                return cloneTarget;
            } else {
                return target;
            }
        };
    </script>
    
</body>
</html>